Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Lime and limestone inventories:
Raw materials	$ 5,617	$ 6,627
Finished goods	1,810	2,049
Total	7,427	8,676
Service parts inventories	6,063	6,052
Total inventories	$ 13,490	$ 14,728

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of unprocessed items to be consumed in the manufacturing or production process.

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Carrying amount, net of valuation reserves and allowances, as of the balance sheet date of inventories not otherwise specified in the taxonomy.

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